Definition of "untested"

If the promising but untested treatment would replace EET, the head-to-head comparison would be similar to the "placebo-controlled" trials I've already described, but with EET in place of the placebo.

2012, R. Brian Haynes, Clinical Epidemiology: How to Do Clinical Practice Research, page 197

The assumption that these are identical in meaning and usage between Indian English and Anglo-American English, while tacitly accepted, is untested, and fundamentally unknown.

2012, James Lambert, “Beyond Hobson-Jobson: A new lexicography for Indian English”, in World Englishes‎, page 306